cmake_minimum_required(VERSION 3.6) set(lib_name md5) set(target_name ${lib_name}) project(${lib_name}) set(${target_name}_src md5.c ) add_library(${target_name} STATIC ${${target_name}_src} ) target_include_directories(${target_name} PUBLIC ..) set_target_properties(${target_name} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" FOLDER "External" )